Lynn, MA

Demakes Family YMCA


Looking to upgrade their facility, the YMCA of Metro North and the Demakes Family undertook a fundraising campaign to construct a new full-service community center and renovate the existing building to focus on youth and teens. The Demakes Family YMCA’s many amenities include a fitness center, indoor pool, and elevated track circling a full-size basketball court. SGH provided structural and building enclosure engineering services for the project.

As the structural engineer of record, SGH designed the steel-framed structure for the new YMCA building. Highlights of our design include:

  • Exposed steel framing, including concentric braced frames that coordinate with the architectural design and program requirements
  • Long-span roof structures over the indoor pool and basketball court
  • Suspended mezzanine to support the elevated track
  • Shallow foundations on a preloaded site to improve allowable bearing capacities
  • Structural support for special equipment, such as basketball hoops
  • Coordination with the swimming pool provider

SGH also consulted on the building enclosure design featuring curtain walls; EIFS, metal panel, and concrete masonry cladding; and low-slope roofing. Highlights of our work include:

  • Reviewing the proposed building enclosure design for airtightness, watertightness, durability, reliability, constructability, and general suitability
  • Helping develop details for the various enclosure systems and to integrate them with
    each other
  • Evaluating interior wall assemblies that separate the high-humidity natatorium from other interior spaces and proposing ways to mitigation condensation
  • Performing construction phase performance testing, including whole building air leakage testing of the natatorium

Project Summary



Completion Date


Construction Value


Project Size
New Construction
Building Enclosures | Structures
Culture & Entertainment
Maugel Architects
Specialized Capabilities
Building Design | Building Science | Roofing & Waterproofing

Key team members

Susan  Knack-Brown
Susan Knack-Brown
Building Technology Division Head, Boston
Sal Capobianco
Sal Capobianco
Senior Principal